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1. |
Name the additive inverse of  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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2. |
The temperature f(x) of water in a lake in degrees Fahrenheit is estimated by the function shown below, where x is the depth in feet of the water. What would be the temperature of water 30 feet below the surface? |
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A. |
71.25°F |
B. |
111°F |
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C. |
63°F |
D. |
33°F |
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Hint |
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3. |
Which element is in row 3, column 1? |
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A. |
-1 |
B. |
9 |
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C. |
4 |
D. |
6 |
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Hint |
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4. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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5. |
Triangle FGH has vertices F(12, 6), G(8, 1), and H(-4, 4). If the triangle is reduced so that the resulting perimeter is half the original perimeter, what are the coordinates of F'? |
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A. |
(6, 3) |
B. |
(6, 6) |
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C. |
(-2, -2) |
D. |
(4, 2) |
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Hint |
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6. |
Find the vertex of the graph of f(x) = x2 + 4x - 5. |
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A. |
(-2, 9) |
B. |
(2, 7) |
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C. |
(0, -5) |
D. |
(-2, -9) |
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Hint |
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7. |
Which is the graph of the inequality y < x2 -2x - 8? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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8. |
Find f(x + h) for f(x) = x2 + 2x. |
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A. |
x2 + 2xh + h2 + 2x |
B. |
x2 + 2x + 2h |
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C. |
x2 + 2x + h |
D. |
x2 + 2xh + h2 + 2x + 2h |
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Hint |
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9. |
Which is not a possible rational zero of the function
g(x) = 3x3 + 2x2 - 7x - 6? |
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A. |
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B. |
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C. |
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D. |
-3 |
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Hint |
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10. |
Solve x4 - 5x2 + 4 = 0. |
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A. |
-1, 1 |
B. |
-1, 1, -2, 2 |
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C. |
1, 2 |
D. |
-1, 1, -2i, 2i |
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Hint |
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11. |
If f(x) = 2x and g(x) = x + 4, find  |
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A. |
-1 |
B. |
7 |
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C. |
13 |
D. |
1 |
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Hint |
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12. |
Which is the inverse of the relation {(1, -3), (3, 5), (6, -2)}? |
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A. |
{(1, -2), (3, 8), (6, 4)} |
B. |
{(-3, 1), (5, 3), (-2, 6)} |
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C. |
{(1, -3), (3, 5), (6, -2)} |
D. |
{(1, 5), (3, -2), (6, -3)} |
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Hint |
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13. |
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in? |
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A. |
$50 |
B. |
$217 |
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C. |
$25 |
D. |
$70 |
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Hint |
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14. |
Which of the following is not a vertex of the figure formed by  |
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A. |
(6, 4) |
B. |
(0, 2) |
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C. |
(2, –1) |
D. |
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Hint |
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15. |
Determine whether the pair of matrices  are inverses. |
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A. |
yes, because A · B = I. |
B. |
no, because fractions cannot be a part of an inverse |
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C. |
yes, because each entry in the second matrix is the reciprocal of its corresponding entry in the first matrix. |
D. |
no, because A · B  I |
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Hint |
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16. |
Express the result in scientific notation.  |
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A. |
1.25 × 10-4 |
B. |
1.25 × 10-10 |
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C. |
1.25 × 104 |
D. |
1.25 × 1010 |
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Hint |
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17. |
Simplify  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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18. |
Simplify:  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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19. |
Solve  |
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A. |
18 |
B. |
no real solution. |
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C. |
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D. |
36 |
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Hint |
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20. |
Solve  by graphing. |
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A. |
{x| 0 < x < 3.12} |
B. |
{x| 0 < x < 3} |
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C. |
{x| –1.12 < x < 0} |
D. |
{x| –1.12 < x < 3.12} |
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Hint |
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